package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.netflix.hystrix.EnableHystrix;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;

/**
 * 服务消费者
 * 通过@EnableDiscoveryClient向服务中心注册；并且向程序的ioc注入一个bean: restTemplate;
 * 并通过@LoadBalanced注解表明这个restRemplate开启负载均衡的功能。
 * 启动后在浏览器访问http://localhost:8764/hello
 * @EnableDiscoveryClient 开启ribbon负载均衡
 * @EnableHystrix 注解开启Hystrix断路器
 * @EnableHystrixDashboard 开启hystrixDashboard 仪表盘
 */
@SpringBootApplication
@EnableDiscoveryClient
@EnableHystrix
@EnableHystrixDashboard
public class DemoApplication {

	public static void main(String[] args) {
		SpringApplication.run(DemoApplication.class, args);
	}
	@Bean
	@LoadBalanced    //表明这个restTemplate开启负载均衡
	RestTemplate restTemplate(){
		return new RestTemplate();
	}
}
